Which form of loft insulation is least irritating to lay and generally to live with?
My current place has about 100mm of dusty rockwool and I was thinking of improving it.
It's a bungalow (about 90 square metres - about 1/3 of it boarded). In my previous place I installed 150mm fibre glass and was itching for a week after (and coughing even though I wore a mask specifically for glass fibre loft insulation). I noticed in the old house that whenever I went into the loft I could see fibres in the air. In my current loft I don't see this. I believe (maybe wrongly) that rockwool fibres are larger so if disturbed tend to settle down again?
Is it worth laying insulation myself (the previous experience was not pleasant) given that installers get the stuff cheaper than me and so even after paying their installation charge its only about 50-60% more than it costs me to buy it?
Finally - is it worth lifting the boarding given that it already has 100mm under it?
Thanks for any info.
John Smith.